Home / 11,154.52-15,393.27-6,438.79

Finding the Fourth Proportional to 11,154.52, 15,393.27 and 6,438.79

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Solution

The fourth proportional to 11,154.52, 15,393.27 and 6,438.79 is: 8,885.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.52 : 15,393.27 = 6,438.79 : x
  2. Step 2: Convert to fraction form
    11,154.52/15,393.27 = 6,438.79/x
  3. Step 3: Cross multiply
    11,154.52x = 15,393.27 × 6,438.79
  4. Step 4: Simplify right side
    11,154.52x = 99,114,032.94
  5. Step 5: Solve for x
    x = 99,114,032.94/11,154.52
  6. Step 6: Final answer
    x = 8,885.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.